36
UK
If the burner is locked out, there will be a steady red light on the lock out pushbutton.
By pressing the transparent pushbutton, the control and checking device will be released.
By pressing it for more than 3 seconds, the diagnosis stage will be activated (red light flashes
rapidly). The table below describes the causes of the lock out or fault in relation to the number
of flashes (always red). The diagnosis function is interrupted by pressing the release button for
at least 3 seconds..
DIAGNOSIS OF LMO EQUIPMENT FAULTS AND LOCK OUT
List operating anomalies
Visual indication
Possible causes
2 flashes
¬¬
No flame signal
- Faulty fuel valves
- Faulty flame detector
- Incorrect burner setting, no fuel
- No ignition
3 flashes
¬¬¬
Not used
4 flashes
¬¬¬¬
Stray light on ignition
5 flashes
¬¬¬¬¬
Not used
6 flashes
¬¬¬¬¬¬
Not used
7 flashes
¬¬¬¬¬¬¬
No flame signal during operation
- Faulty fuel valves
- Faulty flame detector
- Incorrect burner setting, no fuel
8 flashes
¬¬¬¬¬¬¬¬
Anomalies in fuel preheating time
9 flashes
¬¬¬¬¬¬¬¬¬
Not used
10 flashes
¬¬¬¬¬¬¬¬¬¬
Incorrect electrical connection or damage to equipment
OPERATING ANOMALIES DANFOSS OBC 81A.10 (*)
List operating anomalies
Flash codes
Code
Event
2 flashes
¬¬
False light
3 flashes
¬¬¬
No flame when safety time elapses
4 flashes
¬¬¬¬
More than three restarts in the same cycle
5 flashes
¬¬¬¬¬
Max. waiting time on preheater overrun (10 min.)
6 flashes
¬¬¬¬¬¬
Supply voltage above264 V a.c.
8 flashes
¬¬¬¬¬¬¬¬
Undervoltage <170 V (automatic)
Costant flashing
Application failure (EMC)
(*) Compatible with spare SIEMENS LMO14
